Bug 29456: (bug 18532 follow-up) handle Auto_Renewals messages in category

Bug 29456: (bug 18532 follow-up) handle Auto_Renewals messages in category

The new message appears in the list on the edit view, but the list view
is showing "unknown"

Test plan:
Set AutoRenewalNotices to "according to patron messaging prefs"
Edit a patron category
Tick all the checkboxes
On the category list view you should see a correct display in the
"Messaging" column

Signed-off-by: Kelly McElligott <kelly@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>